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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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#1 2009-12-15 07:54:33

Rasmushdahl
Novice

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Archimedean spiral

Hi everyone

Determine the area between the x-axis and the circumference of an archimedean spiral with the parametric equation cos(t)*t,sin(t)*t for t in the interval ]0;Pi]. Please use the hidden button and show your metods. My solution is very troublesome, so you can probably find some easier methods.

I hope you'll enjoy.

Rasmus

 

#2 2011-05-19 03:16:59

gAr
Star Member

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Re: Archimedean spiral

Hi,

Convert to polar co-ordinates.


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
 

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